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webporpoise.exe

Webporpoise

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file webporpoise.exe by Webporpoise has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat.
Publisher:
Webporpoise  (signed and verified)

Version:
1.0.5380.22505

MD5:
2fb860dfd6680d4dfc49dcbe40f238c2

SHA-1:
e2104e75dec5f847fe8be07e74f0721906135008

SHA-256:
03b7f27bc4afb56b336a970b4126c0f8dbe9a9697c6ae4a70557e00e7eebcecd

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
4/25/2024 12:50:58 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.Webporpoise (M)
16.1.20.21

File size:
510.3 KB (522,528 bytes)

Product version:
1.0.5380.22505

Original file name:
webporpoise.exe

Common path:
C:\Program Files\webporpoise\bin\tmpf713.tmp

Digital Signature
Signed by:
Webporpoise

Authority:
VeriSign, Inc.

Valid from:
3/13/2014 6:00:00 PM

Valid to:
3/14/2015 5:59:59 PM

Subject:
CN=Webporpoise, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Webporpoise, L=Santa Monica, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
77E73438E8DB62CBB923965C646E769F

File PE Metadata
Compilation timestamp:
9/24/2014 3:30:15 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
6.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
6144:rkBG3XjTtgTZnm5t317izkLffMSU1v264mfKr4bs67R8Bi/gJAYmvcLEGOC/yf7n:rkWHPZmzkLQ1vrSYCAj71xaBdS

Entry address:
0x7F37E

Entry point:
FF, 25, 00, 20, 40, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 02, 00, 00, 00, 5E, 00, 00, 00, C0, F3, 07, 00, C0, D5, 07, 00, 52, 53, 44, 53, 17, 73, 9B, 6B, E8, 25, F1, 4C, 86, 15, 0F, 63, 76, 1B, 0C, D9, 01, 00, 00, 00, 44, 3A, 5C, 55, 74, 69, 6C, 69, 74, 69, 65, 73, 5C, 79, 33, 33, 65, 79, 62, 78, 6C, 2E, 6C, 72, 31, 5C, 44, 65, 73, 6B, 74, 6F, 70, 5C, 44, 65, 73, 6B...
 
[+]

Entropy:
5.9320

Developed / compiled with:
Microsoft Visual C# / Basic .NET

Code size:
501.5 KB (513,536 bytes)

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